Piezoelectric sensor



FIG. 1 is a perspective view of the front of an embodiment of apiezoelectric sensor;

FIG. 2 is a top plan view of the sensor of FIG. 1, the opposite bottomplan view being a mirror image;

FIG. 3 is a left side plan view of the sensor of FIG. 1, the oppositeright side plan view being a mirror image of the left; and,

FIG. 4 is a rear plan view of the sensor of FIG. 1, the front being amirror image of the rear.

The broken lines in FIGS. 1, 2 and 3 are intended to schematicallyrepresent a connector of any kind and form no part of the claimeddesign.

The ornamental design for a piezoelectric sensor, as shown anddescribed.